CVE-2025-68348block: fix memory leak in __blkdev_issue_zero_pages
- —Not scoredno CVSS score yet
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: block: fix memory leak in __blkdev_issue_zero_pages Move the fatal signal check before bio_alloc() to prevent a memory leak when BLKDEV_ZERO_KILLABLE is set and a fatal signal is pending. Previously, the bio was allocated before checking for a fatal signal. If a signal was pending, the code would break out of the loop without freeing or chaining the just-allocated bio, causing a memory leak. This matches the pattern already used in __blkdev_issue_write_zeroes() where the signal check precedes the allocation.
Timeline
ID reserved
By Linux
- 8 days later
· 8 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected bf86bcdb40123ee99669ee91b67e023669433a1a – < 453e4b0c84d0db1454ff0adf655d91179e6fca3a
- affected bf86bcdb40123ee99669ee91b67e023669433a1a – < 7957635c679e8a01147163a3a4a1f16e1210fa03
- affected bf86bcdb40123ee99669ee91b67e023669433a1a – < 7193407bc4457212fa38ec3aff9c640e63a8dbef
- affected bf86bcdb40123ee99669ee91b67e023669433a1a – < f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf
- affected 6.11
- unaffected < 6.11
- unaffected 6.12.63 – ≤ 6.12.*
- unaffected 6.17.13 – ≤ 6.17.*
- unaffected 6.18.2 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References4
- https://git.kernel.org/stable/c/453e4b0c84d0db1454ff0adf655d91179e6fca3a (opens in a new tab)
- https://git.kernel.org/stable/c/7957635c679e8a01147163a3a4a1f16e1210fa03 (opens in a new tab)
- https://git.kernel.org/stable/c/7193407bc4457212fa38ec3aff9c640e63a8dbef (opens in a new tab)
- https://git.kernel.org/stable/c/f7e3f852a42d7cd8f1af2c330d9d153e30c8adcf (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-205106 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-68348)Record last updated .